Explanation

With organic isocyanate, polyol compounds (including polyester polyols and polyether polyols) and additive as the main raw materials, polyether resin or polyester resin containing hydroxyl groups is reacted with isocyanate to form a polyurethime main body, which is made of carbon dioxide generated by the reaction of isocyanate with water or low boiling point fluorocarbon compounds as blowing agent. It has the characteristics of porosity, low relative density and high specific strength. It can be divided into hard, semi hard and soft polyurethane foam. polyurethane foamed plastics has excellent physical and mechanical properties, acoustic properties, electrical properties and chemical resistance, especially the thermal conductivity of rigid polyurethane foam is particularly low, which is a high-quality thermal insulation and cold insulation materials. Soft polyurethane foam is mainly used as furniture, mattress, packaging materials, filtering materials, acoustic insulation materials, etc.

Classification